étançon de mine à plusieurs éléments,申请号FRD67475-传众专利搜索

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发明名称	étançon de mine à plusieurs éléments
摘要
申请公布号	FR67475(E)	申请公布日期	1958.03.13
申请号	FRD67475	申请日期	1954.09.10
申请人		发明人	SCHMIDT ALEXANDER
分类号	E21D15/28	主分类号	E21D15/28
代理机构		代理人
主权项
地址

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